CN113969676A - Prefabricated assembled column type maintenance pit and construction method thereof - Google Patents
Prefabricated assembled column type maintenance pit and construction method thereof Download PDFInfo
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- CN113969676A CN113969676A CN202111132304.XA CN202111132304A CN113969676A CN 113969676 A CN113969676 A CN 113969676A CN 202111132304 A CN202111132304 A CN 202111132304A CN 113969676 A CN113969676 A CN 113969676A
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- prefabricated
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
- E04H5/02—Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
- E04H5/06—Pits or building structures for inspection or services
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a prefabricated assembled column type maintenance pit which comprises a prefabricated short column, a bottom plate and a hidden beam, wherein a track embedded part is embedded in the upper end of the prefabricated short column, a plurality of first steel bars are embedded in the lower section of the prefabricated short column, and the first steel bars extend out from two opposite side surfaces of the prefabricated short column along the longitudinal direction of a track; a plurality of prefabricated column bottom areas which are longitudinally arranged along the rail at intervals and a plurality of second steel bars which are pre-embedded on the longitudinal two side areas of the prefabricated column bottom areas are arranged on the two transverse sides of the bottom plate, and the second steel bars extend out of the top of the bottom plate along the direction perpendicular to the rail; the prefabricated short column is fixedly arranged on the bottom area of the prefabricated column; the hidden beams are poured on the longitudinal two side areas of the prefabricated column bottom area, steel reinforcement cages are arranged in the hidden beams, and the steel reinforcement cages are respectively connected with the first steel reinforcements and the second steel reinforcements. The invention also discloses a construction method of the prefabricated assembled column type overhaul pit. The invention has the advantages of convenient construction, short construction period, high standardization degree, high connection strength and high overall precision.
Description
Technical Field
The invention belongs to the field of train maintenance facilities, and particularly relates to a prefabricated assembled column type maintenance pit.
Background
The column type maintenance pit is a necessary train maintenance facility in the urban rail transit field. At present, the cast-in-place column type maintenance pit is the construction form of the column type maintenance pit with the widest domestic application range.
The construction method commonly used at present for the traditional cast-in-place column type overhaul pits is as follows:
firstly, pouring a bottom plate and a hidden beam of the inspection pit, and reserving short column reinforcing steel bars of the inspection pit. In the short column pouring process, a positioning steel rail is required to be erected along the track direction, a track embedded part at the top of a short column of the inspection pit is buckled on the positioning steel rail, a formwork is arranged around a reserved steel bar of the short column to pour concrete, the track embedded part and the short column are poured together, and after the short column reaches the designed strength, the formwork is removed and the steel rail is positioned.
The traditional cast-in-place column type inspection pits are large in number, so that pouring is needed in multiple times, multiple reservation is needed, the construction steps are complex, and the requirement on construction precision is high. The following disadvantages are exposed in the past:
(1) because the short column is small in size and needs to be constructed by using a metal template, the phenomenon of die running is easily caused, the concrete forms honeycombs, exposed stones and the like, and the engineering quality is influenced.
(2) The upper part needs to be paved with tracks, so that the requirements on plane positioning and height positioning of the short column are extremely high.
(3) The difficulty in positioning the plane of the reserved short column steel bar is high, so that the problem of deviation needs to be solved by re-planting the steel bar.
(4) Because the short column construction precision control degree of difficulty is big, the phenomenon that the reinforcing bar length is not enough easily takes place, makes the top of the column concrete protective layer too thick, and then leads to the splitting of track built-in fitting lower column cap during the use.
(5) The supplementary board of burying of post top fastener is difficult to pour closely knit down the concrete, appears hollowing easily, needs the secondary to repair the square joint strength who can guarantee fastener and short post.
(6) The construction process is complicated and the construction period is long.
Disclosure of Invention
The purpose of the invention is: the prefabricated assembled column type maintenance pit and the construction method thereof are convenient to construct, short in construction period, high in standardization degree, high in connection strength and high in overall precision.
In order to solve the technical problems, the invention provides a prefabricated assembled column type maintenance pit, which comprises a prefabricated short column, a bottom plate and a hidden beam, wherein a track embedded part is embedded in the upper end of the prefabricated short column, a plurality of first steel bars are embedded in the lower section of the prefabricated short column, and the first steel bars longitudinally extend out from two opposite side surfaces of the prefabricated short column along a track; a plurality of prefabricated column bottom areas which are longitudinally arranged along a rail at intervals and a plurality of second steel bars which are pre-embedded on the longitudinal two side areas of the prefabricated column bottom areas are arranged on the two transverse sides of the bottom plate, and the second steel bars extend out of the surface of the bottom plate along the direction perpendicular to the rail; the prefabricated short column is fixedly arranged on the prefabricated column bottom area; the hidden beam is poured on the longitudinal two side areas of the prefabricated column bottom area, a reinforcement cage is arranged in the hidden beam, and the reinforcement cage is connected with the first reinforcement and the second reinforcement respectively.
The second aspect of the present invention provides a construction method of a prefabricated column type service pit, which includes the steps of:
and 6, installing the hidden beam template and pouring concrete to form the hidden beam, so that the hidden beam, the bottom plate and the prefabricated short column form a whole.
As a preferable scheme of the construction method of the prefabricated assembled column type overhaul pit, in the step 1, first positioning angle steels are respectively embedded at the same height on the two transverse sides of the prefabricated short column.
As a preferred scheme of the construction method of the prefabricated column type overhaul pit, the column cap elevation leveling device comprises second positioning angle steel and a jacking driving unit, the second positioning angle steel is longitudinally arranged along the track, and the two longitudinal ends of the second positioning angle steel are respectively connected with the jacking driving unit;
use when column cap elevation levelling device carries out column cap elevation adjustment to many prefabricated short columns, at the below position of the first location angle steel of the horizontal both sides of many vertical same-row prefabricated short columns respectively the level erect a second location angle steel to through jacking drive unit drive second location angle steel and the laminating of first location angle steel, drive many prefabricated short columns simultaneously and go up and down to realize the adjustment of column cap elevation.
As a preferable scheme of the construction method of the prefabricated assembled column type overhaul pit, the jacking driving unit is a manual jack, an electric jack or a hydraulic jack.
As a preferable scheme of the construction method of the prefabricated column type maintenance pit, in the step 3, the thickness of the bedding slurry layer is not less than 20 mm.
Compared with the prior art, the prefabricated assembled column type overhaul pit and the construction method thereof provided by the invention have the beneficial effects that:
(1) the novel column type maintenance pit structure system of the cast-in-place hidden beam and the prefabricated short column is adopted to replace the traditional cast-in-place method, so that the construction difficulty of the column type maintenance pit is reduced, and the construction efficiency of the column type maintenance pit is improved; meanwhile, the prefabricated short column manufactured in a factory prefabricating mode can greatly improve the production quality and efficiency of the column member and effectively avoid the mold running phenomenon generated by the cast-in-place upright column.
(2) According to the invention, through the integral prefabrication of the prefabricated short column and the track embedded part, the connection strength and the integral accuracy of the prefabricated short column and the track embedded part at the top end of the prefabricated short column can be ensured at one time, the quality and the standardization level of the prefabricated short column and the embedded part thereof are obviously improved, the length of the vertical steel bar in the prefabricated short column can be better controlled, the phenomenon that the thickness of the column top protective layer is too large is effectively avoided, and the problems that column head splitting occurs in the use process due to the fact that the cast-in-place technology is difficult to meet the construction accuracy of the short column are solved.
(3) The prefabricated short column steel bars (namely the first steel bars), the bottom plate steel bars (namely the second steel bars) and the hidden beam steel bar cages are bound together, so that the steel bars are stressed cooperatively, and finally the prefabricated short column and the bottom plate are connected into a whole by pouring the hidden beam, so that the stress requirements of the column type overhaul pit under the working conditions of running, parking and the like of a train are met.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
FIG. 1 is a schematic structural diagram of a prefabricated assembly column type service pit according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a prefabricated stub;
FIG. 3 is a schematic view of the structure of the base plate;
FIG. 4 is a cross-sectional view A-A of the structure shown in FIG. 3;
FIG. 5 is a schematic structural view of a prefabricated short column and a built-in beam after construction;
FIG. 6 is a cross-sectional view of B-B in the configuration shown in FIG. 5;
FIG. 7 is a cross-sectional view of C-C in the configuration shown in FIG. 5;
FIG. 8 is a schematic structural view of a plurality of prefabricated short columns leveled under a column head elevation leveling device;
the labels in the figure are:
1. the device comprises a prefabricated short column, 101 reinforcement penetrating holes, 2 a base plate, 201 a prefabricated column bottom area, 202 a hidden beam pouring area, 3 a hidden beam, 4 a track embedded part, 5 a first steel bar, 6 a second steel bar, 7 a steel bar cage, 8 a grout layer, 9 a first positioning angle steel, 10 a second positioning angle steel, 11 a jacking driving unit.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the machine or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, which are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, either fixedly connected, detachably connected, or integrally connected, unless otherwise explicitly stated or limited; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 7, the prefabricated assembled column type maintenance pit provided by the embodiment of the invention comprises a prefabricated short column 1, a bottom plate 2 and a hidden beam 3, wherein a track embedded part 4 is embedded in the upper end of the prefabricated short column 1, a plurality of first steel bars 5 are embedded in the lower section of the prefabricated short column 1, and the first steel bars 5 longitudinally extend out from two opposite side surfaces of the prefabricated short column 1 along a track; a plurality of prefabricated column bottom areas 201 which are arranged at intervals along the longitudinal direction of a rail and a plurality of second steel bars 6 which are pre-embedded on two longitudinal side areas (namely a hidden beam pouring area 202) of the prefabricated column bottom areas 201 are arranged on two transverse sides of the bottom plate 2, and the second steel bars 6 extend out of the surface of the bottom plate 2 along the direction perpendicular to the rail; the prefabricated short column 1 is fixedly arranged on the prefabricated column bottom area 201; the hidden beam 3 is poured on the longitudinal two side areas of the prefabricated column bottom area 201, a reinforcement cage 7 is arranged in the hidden beam 3, and the reinforcement cage 7 is connected with the first reinforcement 5 and the second reinforcement 6 respectively.
As shown in fig. 1 to 8, based on the prefabricated pillar type service pit, an embodiment of the present invention further provides a construction method of a prefabricated pillar type service pit, including the following steps:
and 6, installing a hidden beam 3 template and pouring concrete to form the hidden beam 3, so that the hidden beam 3, the bottom plate 2 and the prefabricated short column 1 form a whole.
Exemplarily, as shown in fig. 8, in step 1, one or more first positioning angle steels 9 are respectively embedded in the same height on the two lateral sides of the prefabricated short column 1, so as to conveniently cooperate with a crane to hoist the prefabricated short column 1 and cooperate with a column cap elevation leveling device to support the prefabricated short column 1 to ascend and descend, thereby realizing the automatic and mechanical construction of the column. Specifically, the column head elevation leveling device comprises second positioning angle steel 10 and a jacking driving unit 11, wherein the second positioning angle steel 10 is longitudinally arranged along a track, and the two longitudinal ends of the second positioning angle steel 10 are respectively connected with the jacking driving unit 11; the jacking driving unit 11 is a manual jack, an electric jack or a hydraulic jack. Use when column cap elevation levelling device carries out column cap elevation adjustment to many prefabricated short columns 1, at the below position of the first location angle steel 9 of the horizontal both sides of many vertical same-row prefabricated short columns 1 respectively the level erect a second location angle steel 10 to through the laminating of jacking drive unit 11 drive second location angle steel 10 and first location angle steel 9, drive many prefabricated short columns 1 lift simultaneously and realize the adjustment of column cap elevation. That is to say, as long as first location angle steel 9 is accurate with the counterpoint of second location angle steel 10, can guarantee that all column caps location is accurate to the realization once only finely tunes many prefabricated short column 1 column cap elevation simultaneously, thereby has promoted the installation positioning efficiency of prefabricated short column 1 remarkably, further shortens construction period.
Illustratively, in the step 3, the thickness of the mortar layer 8 is not less than 20mm, so as to ensure that the thickness of the mortar layer 8 is poured and improve the connection compactness of the mortar layer 8 between the prefabricated short column 1 and the bottom plate 2.
Therefore, according to the prefabricated assembled column type maintenance pit and the construction method thereof provided by the embodiment of the invention, the innovation key is as follows:
(1) the embodiment of the invention adopts a novel column type maintenance pit structure system of a cast-in-place hidden beam 3+ prefabricated short column 1 to replace the traditional cast-in-place method, thereby reducing the construction difficulty of the column type maintenance pit and improving the construction efficiency of the column type maintenance pit; meanwhile, the prefabricated short column 1 manufactured in a factory prefabricating mode can greatly improve the production quality and efficiency of the column member and effectively avoid the mold running phenomenon generated by a cast-in-place stand column.
(2) According to the embodiment of the invention, the integral prefabrication of the prefabricated short column 1 and the track embedded part 4 can ensure the connection strength and the integral accuracy of the prefabricated short column 1 and the track embedded part 4 at the top end thereof at one time, the quality and the standardization level of the prefabricated short column 1 and the embedded part thereof are obviously improved, the length of the vertical steel bar in the prefabricated short column 1 can be better controlled, the phenomenon that the thickness of the column top protective layer is too large is effectively avoided, and the problems that column head splitting occurs in the use process due to the fact that the cast-in-place technology is difficult to meet the construction accuracy of the short column are solved.
(3) According to the embodiment of the invention, the prefabricated short column reinforcing steel bars (namely the first reinforcing steel bars 5), the bottom plate reinforcing steel bars (namely the second reinforcing steel bars 6) and the hidden beam reinforcing cage 7 are bound together, so that the reinforcing steel bars are stressed cooperatively, and finally the prefabricated short column 1 and the bottom plate 2 are connected into a whole by pouring the hidden beam 3, so that the stress requirements of the column type overhaul pit under working conditions of running, parking and the like of a train are met.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (6)
1. A prefabricated assembled column type overhaul pit is characterized by comprising a prefabricated short column, a bottom plate and a hidden beam, wherein a track embedded part is embedded in the upper end of the prefabricated short column, a plurality of first steel bars are embedded in the lower section of the prefabricated short column, and the first steel bars longitudinally extend out of two opposite side surfaces of the prefabricated short column along a track; a plurality of prefabricated column bottom areas which are longitudinally arranged along a rail at intervals and a plurality of second steel bars which are pre-embedded on the longitudinal two side areas of the prefabricated column bottom areas are arranged on the two transverse sides of the bottom plate, and the second steel bars extend out of the surface of the bottom plate along the direction perpendicular to the rail; the prefabricated short column is fixedly arranged on the prefabricated column bottom area; the hidden beam is poured on the longitudinal two side areas of the prefabricated column bottom area, a reinforcement cage is arranged in the hidden beam, and the reinforcement cage is connected with the first reinforcement and the second reinforcement respectively.
2. A construction method of a prefabricated column type overhaul pit is characterized by comprising the following steps:
step 1, manufacturing a prefabricated short column, embedding a track embedded part at the upper end of the prefabricated short column, embedding a plurality of first steel bars at the lower section of the prefabricated short column, and extending the first steel bars out of two opposite side surfaces of the prefabricated short column along the longitudinal direction of a track;
step 2, pouring a bottom plate in the overhaul pit area, dividing a plurality of prefabricated column bottom areas which are longitudinally arranged at intervals along the track on the two transverse sides of the bottom plate according to the distribution positions of the prefabricated short columns, taking the longitudinal side areas of the prefabricated column bottom areas as hidden beam pouring areas, pre-burying a plurality of second steel bars on the hidden beam pouring areas, and enabling the second steel bars to extend out of the top of the bottom plate along the direction perpendicular to the track;
step 3, measuring and finishing the flatness of the prefabricated column bottom area of the bottom plate, and pouring a grout blanket with proper thickness in the prefabricated column bottom area of the bottom plate;
step 4, adjusting the column cap elevations of the prefabricated short columns to the same height through a column cap elevation leveling device, and enabling the column cap elevations to be located on the grout layer, so that the grout layer is guaranteed to be compact, and positioning of the prefabricated short columns is completed;
step 5, binding a reinforcement cage on the hidden beam pouring area, and connecting the reinforcement cage with the first reinforcement and the second reinforcement respectively;
and 6, installing the hidden beam template and pouring concrete to form the hidden beam, so that the hidden beam, the bottom plate and the prefabricated short column form a whole.
3. The construction method of the prefabricated column type overhaul pit as claimed in claim 2, wherein in the step 1, first positioning angle steels are pre-buried at the same height on both lateral sides of the prefabricated short column respectively.
4. The construction method of the prefabricated column type overhaul pit according to claim 3, wherein the column head elevation leveling device comprises second positioning angle steel and a jacking driving unit, the second positioning angle steel is longitudinally arranged along a rail, and the jacking driving unit is respectively connected to two longitudinal ends of the second positioning angle steel;
use when column cap elevation levelling device carries out column cap elevation adjustment to many prefabricated short columns, at the below position of the first location angle steel of the horizontal both sides of many vertical same-row prefabricated short columns respectively the level erect a second location angle steel to through jacking drive unit drive second location angle steel and the laminating of first location angle steel, drive many prefabricated short columns simultaneously and go up and down to realize the adjustment of column cap elevation.
5. The construction method of a prefabricated assembly type column type overhaul pit according to claim 4, wherein the jacking driving unit is a manual jack, an electric jack or a hydraulic jack.
6. The construction method of a prefabricated column type service pit as claimed in claim 2, wherein in the step 3, the thickness of the bedding course is not less than 20 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111132304.XA CN113969676B (en) | 2021-09-26 | 2021-09-26 | Prefabricated assembled column type maintenance pit and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111132304.XA CN113969676B (en) | 2021-09-26 | 2021-09-26 | Prefabricated assembled column type maintenance pit and construction method thereof |
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| CN113969676A true CN113969676A (en) | 2022-01-25 |
| CN113969676B CN113969676B (en) | 2023-05-02 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047423A (en) * | 2014-05-14 | 2014-09-17 | 中建七局第二建筑有限公司 | Mold and construction method for precisely reserving hole in floorslab |
| CN108425375A (en) * | 2018-04-25 | 2018-08-21 | 李藏柱 | A kind of basis prefabricated post and its connection structure and its construction method |
| CN109339087A (en) * | 2018-10-08 | 2019-02-15 | 贺州通号装配式建筑有限公司 | A kind of foundation structure system of low-rise building |
| US20190119900A1 (en) * | 2017-10-20 | 2019-04-25 | Ruentex Engineering & Construction Co., Ltd. | Construction method for a building |
| CN111926910A (en) * | 2020-07-29 | 2020-11-13 | 江苏新盈装配建筑科技有限公司 | Installation method of fabricated building |
| DE202020004631U1 (en) * | 2020-11-04 | 2020-12-21 | BOOS Werkstatt- u. Industrieausrüstung GmbH-Oberhausen- | Test and workshop pits |
| CN112240111A (en) * | 2020-06-11 | 2021-01-19 | 中铁第四勘察设计院集团有限公司 | Subway prefabricated assembly column type inspection pit structure and construction method |
| CN213953148U (en) * | 2020-10-29 | 2021-08-13 | 中亿丰建设集团股份有限公司 | Column type inspection pit precast concrete track column |
-
2021
- 2021-09-26 CN CN202111132304.XA patent/CN113969676B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047423A (en) * | 2014-05-14 | 2014-09-17 | 中建七局第二建筑有限公司 | Mold and construction method for precisely reserving hole in floorslab |
| US20190119900A1 (en) * | 2017-10-20 | 2019-04-25 | Ruentex Engineering & Construction Co., Ltd. | Construction method for a building |
| CN108425375A (en) * | 2018-04-25 | 2018-08-21 | 李藏柱 | A kind of basis prefabricated post and its connection structure and its construction method |
| CN109339087A (en) * | 2018-10-08 | 2019-02-15 | 贺州通号装配式建筑有限公司 | A kind of foundation structure system of low-rise building |
| CN112240111A (en) * | 2020-06-11 | 2021-01-19 | 中铁第四勘察设计院集团有限公司 | Subway prefabricated assembly column type inspection pit structure and construction method |
| CN111926910A (en) * | 2020-07-29 | 2020-11-13 | 江苏新盈装配建筑科技有限公司 | Installation method of fabricated building |
| CN213953148U (en) * | 2020-10-29 | 2021-08-13 | 中亿丰建设集团股份有限公司 | Column type inspection pit precast concrete track column |
| DE202020004631U1 (en) * | 2020-11-04 | 2020-12-21 | BOOS Werkstatt- u. Industrieausrüstung GmbH-Oberhausen- | Test and workshop pits |
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| CN113969676B (en) | 2023-05-02 |
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